Starting apparatus for internal-combustion engines



F, KRMZ. summa 'Aspmwskoa msnm. cumusnos Exams. MPUCAUDN HLM) APR.. 55.MN5.

1,383,311. Pawnwdmy 5, 1921.

. p WINES s J 0 l mmm j 771.' M A l n f/'a/Jz ,/ffz

i manners AMERIGAN EDSGE 0F NEW YGRIK, l

To all ywhom it may concern.'

Be it known that I, FRANZ Kenra, a sub jectof the Emperor of Germany,residing; at and whose poet-oiice 'iaddress is Schlossstrasse 59,Stuttgartj Germany invented certain new and useful improvements inStarting Apparatus for nternai-Combns tion Engines; and do herebydeciare the following to be a full, cie/ar, and exact ciescription ofthe invention, sucii as wiii en able others skiiled in the art to whichit ep pertains to make and use the saine.

The present invention relates to starting apparatus-for internalcombustion engines, and vparticularly to apparatus in which e vcombinedstarting and running ignition sy tem is provided for en engine .haring astarting motor, wherein the controlling member not only connects thesource of power snpply to the' motor to start the engine, butsimultaneously renders tbe ignition system eiiective toproducesatisfactory ignition currents at the spark plugs ci the engineduring the starting period.' Subsequently the controllingmemberdisconnects the source from the starting motor and rendere tile buzzerineffective in its reverse operau tion.

it was customary heretofore to provide in suc?) systems .independentstarting antlrnn ning ignition apparatus. ln accordance with myinvention, a magneto is geared to tbe engine for producingA tbe ignitioncnr rents during running. and the starting ignition apparatus,comprisiin"r a buzzer or other electromagnetic vibratore is niiiized tosnpply vibratory currents to the magneto for producing ignition currents(hiring the starting period. in this wav, the starting: ignitionapparatus is simplified in that the service magneto performs, during;the starb ingr period, the function of a seconiiaijv windlng forthebnzzer, whereasq if desired, the mechanical interrupter of themagneto may time the ignition currents produced thereby,'and tliedistributer of the magneto may distribute the ignition currents to theengine cylinders in turn in the cese of e muiticylinder engine. Byntiiizing this arrangement in a system in Wbiclitiie buzzer is renderedeffective for supplying Vibratory currents to the magneto at the sametime the source of power supply is connected. to

peoieetion of llettere E'atent.

, Melonen, en

new ai to the engine n The idea iin. plied to various liniiis o sucia aselectric9 eompreeseo anti to various of s tems` en enenipie, Ee afterstarting apparet starting motor and iV are empio-yeti and wherein thester-tina' ignit L c embotlies a bieb frequency 'plied with cui ent bytbe charging nto i engine driven 1 secondary winding?, there on c whichare eiilective for tii one tire of the speed rot .tion o tbe me in theaccompanying man i ings., iignres l f2 slice' a four engine7 as anenainpim and apparatus excepting the ment therefor.

In both modifications, the st drives the crank shaft of "t throughsuitable ,eeaiiofig9 end mechanical interrupter :n are geared to b Way.The .has prit g, one end 'being ground. fi end beine connecten to oneary winding; c end aise to lined contact which coiipe groundeddeiicctinrr Contact ie mechanical intern' :iter: M the secondarywinding' lie eoilector ring;n and tl'ience throng), time brush to therotatable brush of i from whence the high tension if rents distributedto tbe man i ings in 'v-ice engine cyiinders. W" ignition apein startingewnzcmng ine start paretus comprises a bieb freeneiicff interrnpter orbuzzer having one enti of its Winti ing n. eonnectefi by means of brushto the interrupter contact it? end having other-i enti connected to thevibrating armature o which cooperates with the contact nai 39,. in betninciiiiicatione peintes connects the be motor a; fer e g3 neesimultaneously connects the battery l) to the interrupter n, o ttorproducing ignition sparks at the spark plugs during starting. However,according to Fig. l, the electromagnetically operated switch, havingAthe Winding c and the switch bridge c, closes the circuit from thebattery l) to the starting,` motor t and also closes the circuit at 71,3from the battery b to the interrupter u, o, Whereas, according to Fig.2, the hand opereted switch .al closes thecoperative contacts fr, s inthe circuit between the battery l) and the interrupter n, o, While theelectromagnetically operated switch. connects the bat k tery to thestarting motor. ln both cases the Winding e is connected to the batteryo by the hand operated switch d, and in Fig. 2 the arrangement is suchthat the contacts 7', s are closed and opened at the seme time that thecircuit of the Winding` c is closed and opened. ln vFig. l theinsulating block t is interposed between the switch bridge c and thespring-supported contact s, the en rangement being such that thecooperative contacts r, e close and open the circuit -from the batteryto the interrupter n, o at the same time that the switch bridge c closesand opens the circuit :trom the battery b to the starting motor a.

It will now be understood that a single operation of the switch al putsthe normally inactive starting motoi` c* and interruptor n, o intooperation, causing the starting motor to drive the engine w undsimultaneously causing ignition voltages suitable for producingeffective ignition sparks et the spark plugs to be generated in thesecondary Winding of the magneto f. lin this Way, ignition voltages,Whose sperl-producing effectiveness is independent of the speed of theengine, occur et the spur ,si igs during the entire starting; period,causing* tice engine to start under its own power as soon es thecombustible mixtures in the Acylinders have sufficient richness toproduce e sufiicient impulse intensity at suflicient frequency. Thus,besides simplifying duty of the operator, the critics speed oit theengine is less than the speed at which the engine will otherwise start,because the critical Speed is less than that at Whichthe magneto fordinarily produces effective ignition sparks due to rotation. Thecritical speed being less, the size of the starting motor i and of thebattery is less, and thus the 'weight and space requirements of thestarting equipnient may be appreciebly reducedE I Furthermore, theswitthinLg;l arrangement isv sucb. that the reverse operation of theswitch d disconnects current supply-` from the starting motor end thesterting gnition apparatus, thus discontinuing tbe tion of the contactsmf and 7i., and in this premature ignition during the storting period isavoided.

Having thus described my invention, what il claim is:

l. The combination With un internal combustion engine having sparkplugs, and a starting motor for the engine; of a combined starting and4running ignition vsystem comprising a magneto geared to the engine forsupplying ignition currents to the spark plugs during the runningperiod; a buzzer connected to the magneto to supply vibratory currentsthereto; a source of power supply; and a controlling member, Which in alsingle operation, connects the source to the motor to start the engineand renders the buzzer effective to cause the magneto to supply ignitioncurrents to the spark plugs during the starting period, and which, inthe reverse operation, disconnects the source from the motor and rendersthe buzzer inefiective so that the magneto by itself supplies theignition currents to the spark plugs.

2. lfhe combination with an internel combustion engine having sparkplugs, end a starting motor for the engine; of u combined starting undrunning ignition system comprising a magneto geared to the engine forsupplying ignition currents to the spark plugs during the runningperiod; a buzzer connected to the magneto to supply vibratoryo currentsthereto; a source o power supply; an electromagnetically-operatedcontrolling member; end a hand-operated switch which, in a singleoperation, causes the electromegnetically-operated controlling member toconnect the source to the motor to start the engine und to the buzzer torender it eiective to supply vibratory currents tothe magneto forproducing ignition currents therein during the starting period, andwhich, in the reverse operation, disconnects the source from thestarting motor` and the buzzer so that the magneto by itself suppliesthe ignition currents to the spark plugs.

ln testimony whereof I affix my signature, in presence ot' twoWitnesses.

ruins itnnrz.

Witnesses PAUL loLrAnn Anotr inconnus.

